| ID | Name | # of EDID |
| VSN | Ingram Macrotron | 1 |
| VTK | Viewteck Co., Ltd. | 1 |
| VTS | VTech Computers Ltd | 1 |
| WAC | Wacom Tech | 1 |
| WAN | DO NOT USE - WAN | 1 |
| WDE | Westinghouse Digital Electronics | 1 |
| WNX | Wincor Nixdorf International GmbH | 1 |
| WYR | WyreStorm Technologies LLC | 3 |
| WYS | Myse Technology | 1 |
| XLX | Xilinx, Inc. | 8 |
| YMH | Yamaha Corporation | 2 |